New and recent results from NA48/2

Madigozhin, D.; Anzivino, G.; Arcidiacono, R.; Baldini, W.; Balev, S.; Batley, J. R.; Behler, M.; Bifani, S.; Biino, C.; Bizzeti, A.; Bloch-Devaux, B.; Bocquet, G.; Cabibbo, N.; Calvetti, M.; Cartiglia, N.; Ceccucci, A.; Celeghini, E.; Cenci, P.; Cerri, C.; Cheshkov, C.; Cheze, J. B.; Clemencic, M.; Collazuol, G.; Costantini, F.; Cotta Ramusino, A.; Coward, D.; Cundy, D.; Dabrowski, A.; Dalpiaz, P.; Damiani, C.; De Beer, M.; Derre, J.; Dibon, H.; Dilella, L.; Doble, N.; Eppard, K.; Falaleev, V.; Fantechi, R.; Fidecaro, M.; Fiorini, L.; Fiorini, M.; Fonseca Martin, T.; Frabetti, P. L.; Gatignon, L.; Gersabeck, E.; Gianoli, A.; Giudici, S.; Gonidec, A.; Goudzovski, E.; Goy Lopez, S.; Hita-Hochgesand, M.; Holder, M.; Hristov, P.; Iacopini, E.; Imbergamo, E.; Jeitler, M.; Kalmus, G.; Kekelidze, V.; Kleinknecht, K.; Kozhuharov, V.; Kubischta, W.; Lamanna, G.; Lazzeroni, C.; Lenti, M.; Litov, L.; Madigozhin, D.; Maier, A.; Mannelli, I.; Marchetto, F.; Marchevski, R.; Marel, G.; Markytan, M.; Marouelli, P.; Martini, M.; Masetti, L.; Mazzucato, E.; Michetti, A.; Mikulec, I.; Misheva, M.; Molokanova, N.; Monnier, E.; Moosbrugger, U.; Morales Morales, C.; Munday, D. J.; Nappi, A.; Neuhofer, G.; Norton, A.; Patel, M.; Pepe, M.; Peters, A.; Petrucci, F.; Petrucci, M. C.; Peyaud, B.; Piccini, M.; Pierazzini, G.; Polenkevich, I.; Potrebenikov, Yu.; Raggi, M.; Renk, B.; Rubin, P.; Ruggiero, G.; Savrie, M.; Scarpa, M.; Shieh, M.; Shkarovskiy, S.; Slater, M. W.; Sozzi, M.; Stoynev, S.; Swallow, E.; Szleper, M.; Valdata-Nappi, M.; Vallage, B.; Velasco, M.; Veltri, M.; Venditti, S.; Wache, M.; Wahl, H.; Walker, A.; Wanke, R.; Widhalm, L.; Winhart, A.; Winston, R.; Wood, M. D.; Wotton, S. A.; Zinchenko, A.; Ziolkowski, M.

Recent results from the NA48/2 experiment are presented. The most precise measurement of the charged kaon semileptonic form factors has been obtained from 4.28 million Ke±3 and 2.91 million Kµ±3 events collected in 2004. A sample of 1663 events of the very rare decay K± ? µ±?e+e- has been collected in the region Mee > 140 MeV/c2 with negligible background. The measured model independent decay rate is in agreement with ChPT predictions. The branching ratio of the K± ? p±p0e+e- decay, never observed so far, has been obtained from a sample of 5000 candidates, in agreement with ChPT predictions.

New and recent results from NA48/2 / Madigozhin D., Anzivino G., Arcidiacono R., Baldini W., Balev S., Batley J.R., Behler M., Bifani S., Biino C., Bizzeti A., Bloch-Devaux B., Bocquet G., Cabibbo N., Calvetti M., Cartiglia N., Ceccucci A., Celeghini E., Cenci P., Cerri C., Cheshkov C., et al.. - ELETTRONICO. - (2017), pp. 65-70. (52nd Rencontres de Moriond on QCD and High Energy Interactions 2017 Aosta Valley, ita 2017).